Function: The main function of the aquarium sponge filter is to filter impurities, dirt, and harmful substances in the water, while also adsorbing and decomposing harmful substances such as ammonia and nitrite, thereby maintaining the cleanliness and appropriate pH value of the water.

Composition: Aquarium sponge filters usually consist of two parts: filter cotton and filter sand. Filter cotton is responsible for filtering impurities such as suspended solids, residual bait, and feces in water, while filter sand can adsorb harmful substances such as ammonia and nitrite in water.

Replacement frequency: The replacement frequency of the filter depends on its usage and the degree of water pollution. Normally, the filter cotton needs to be replaced every 3 months and the filter sand needs to be replaced every 6 months.

Attention: When replacing the filter cotton and filter sand, it is necessary to clean the filter first, and then install the new filter cotton and filter sand into the filter. When cleaning and replacing the filter, it is necessary to be careful not to damage the structure and components of the filter.

In summary, aquarium sponge filters are one of the important equipment for maintaining clean water quality, requiring regular cleaning and replacement of filter cotton and sand to ensure their normal operation and optimal performance.